The best part about the broadcast was the associated chatroom. Unfortunately, the chatroom was not archived with the video. During the hour-long workshop, I demonstrated and talked about a variety of apps. Here are the App Store links:

In addition, after the show I learned that you can indeed search within the iTunes Store for only free apps. After initiating a search, click Power Search and select Applications. You'll see a checkbox that says Search for free applications.

Note: Unfortunately, the recording did not pick up the audio or video from David's call--another reason to watch live.